I'm looking over the Massachusets Approved Firearms Roster, and it lists the following Armscore guns (all in 45ACP):
Rock Island 1911 A-1 GI
Rock Island 1911 A-1 GS CS Blue
Rock Island 1911 A-2 GI FS Blue
Rock Island 1911 A-2 GI MS Blue
Can anyone clarify what the difference between the "A-1" and "A-2" pistols are? I'm assuming it's supposed to mean M1911A1 vs M1911A2, but I've never hears of a M1911A2.
Also, any idea what the "GS" in "Rock Island 1911 A-1 GS CS Blue" means? My initial thought was "GI with a typo", but "S" and "I" are on opposite sides of the keyboard.